Canon lens EF 300mm f28L IS USM User Manual

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7. Tips on Using the Image Stabilizer
●In semi-darkened areas such as indoors or
outdoors at night.
● In locations where flash photography is
prohibited, such as art museums and theater
stages.
● In situations where your footing is uncertain.
● In situations where fast shutter settings
cannot be used. ●
When panning subjects in motion.
● MODE 1 ●MODE 2
OFF
ONOFF
ON
The image stabilizer for this lens is effective for hand-held shots in the following conditions.
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●The Image Stabilizer cannot compensate for a
blurred shot caused by a subject that moved.
● Set the STABILIZER switch to OFF when you
are taking pictures using the Bulb setting (long
exposures). If the STABILIZER switch is set to
ON, the image stabilizer function may introduce
errors.
● The Image Stabilizer might not be fully effective
in the following cases:
• You shoot from a violently moving vehicle.
• You move the camera dramatically for a
panning shot in Mode 1.
• You shoot using techniques...

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●When using the extender EF2 ×II with the
EF500mm f/4L IS USM or EF600mm f/4L IS
USM, you can use the Image Stabilizer with the
following cameras: EOS-1Ds Mark III, EOS-1Ds
Mark II, EOS-1Ds, EOS-1D Mark III, EOS-1D
Mark II N, EOS-1D Mark II, EOS-1D, EOS 40D,
30D, 20D, 20Da, 10D, 5D, EOS DIGITAL
REBEL XSi/EOS 450D, EOS DIGITAL REBEL
XTi/400D DIGITAL, EOS DIGITAL REBEL
XT/350D DIGITAL, EOS DIGITAL REBEL/300D
DIGITAL, EOS D60, D30, EOS DCS1, DCS3,
D2000, D6000, EOS-1V/HS, EOS-
1N/DP/HS/RS, 3, ELAN...

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9. Depth-of-Field Scale
The depth of field is the distance in front of and
behind the plane of focus on the subject that
appears sharp. The depth of field is indicated by
the area between the depth-of-field scale lines
below the distance scale. The numbers on the
scale are F values.
32 32
ft
m70203010
The depth-of-field scale is an approximate indicator.
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10. Using the Tripod Mount
Adjusting the Tripod MountBy loosening the orientation locking knob on the tripod mount you can ro\
tate the camera to set the
image for any vertical or horizontal position.
Detaching the Tripod Mount(EF300mm f/2.8L IS USM only)
First remove the lens from the camera and then remove the tripod mount f\
rom the lens as shown
below. To attach the tripod mount, reverse the procedure.
Align the red mark on the
tripod mount with the lens
mount index.
Loosen the orientation...

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11. Hood
The special hoods that come with all these
lenses cut out unwanted light and protect the
front of the lens from rain, snow, and dust.
To  attach the hood, loosen the hood lock knob
by turning it counterclockwise. Fit the hood onto
the lens’s hood mount, and tighten the lock knob
to fix it in place. Use the same procedure, in
reverse, to remove the hood.
12. Case
Put the lens away as follows.
Reverse the lens hood, slip it over the lens, and attach the lens cap. 
Position the tripod mount...

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A
52-series drop-in gelatin filter holder with a
glass filter is included with the lens. The drop-in
filter holder can be used fitted with a gelatin filter
(sold separately).
13. Drop-In Filters
14mm
14mm
47mm
47mm
To  remove the drop-in filter, press in the left and
right lock buttons and pull the filter holder
straight up out of the slot.
To   install the drop-in filter, push the filter holder
straight down into the slot until it clicks into place.
● The filter holder can be installed facing...

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14. Extenders (Sold Separately)
Lens specifications when using extender EF1.4×II/EF2 ×II are as follows.
Focal length (mm)ApertureDiagonalAngle of view VerticalHorizontal
Maximum magnification (× )
EF300mm f/2.8L IS USM
EF1.4× II EF2×II
420 600f/4 – 45 f/5.6 – 646° 10’4° 10’3° 20’2° 20’5°3° 30’
0.19 0.28
EF400mm f/2.8L IS USM
EF1.4 ×II EF2×II
560 800f/4 – 45 f/5.6 – 644° 25’ 3° 5’2° 25’1° 40’3° 40’2° 35’
0.22 0.31
Focal length (mm)ApertureDiagonal Angle of view VerticalHorizontal
Maximum...

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●When shooting with EOS A2/A2E/5 fitted with
either the EF300mm f/2.8L IS USM or
EF400mm f/2.8L IS USM, use –0.5 step
exposure compensation when using extender
EF1.4 ×II, and use –1 step exposure when using
extender EF2 ×II.
● When taking pictures on an EOS A2/A2E/5
using an  EF1.4×II/EF2 ×II extender with the
EF500mm f/4L IS USM or the EF600mm f/4L IS
USM, use the values in the table below for
exposure compensation.
● Extenders cannot be used more than one at a
time.
Extenders (Sold...

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Specifications
●The lens length is measured from the mount surface to the front end of t\
he lens. Add
26.5 mm when including the lens cap and dust cap.
● The size and weight listed are for the lens only, except as indicated.
● The Close-up Lenses 250D and 500D cannot be attached.
● Aperture settings are specified on the camera.
● All data listed is measured according to Canon standards.
● Product specifications and appearance are subject to change without noti\
ce.
EF300mm f/2.8L IS USM EF400mm...